CVE-2017-12240

critical

Description

The DHCP relay subsystem of Cisco IOS 12.2 through 15.6 and Cisco IOS XE Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system. The attacker could also cause an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to a buffer overflow condition in the DHCP relay subsystem of the affected software. An attacker could exploit this vulnerability by sending a crafted DHCP Version 4 (DHCPv4) packet to an affected system. A successful exploit could allow the attacker to execute arbitrary code and gain full control of the affected system or cause the affected system to reload, resulting in a DoS condition. Cisco Bug IDs: CSCsm45390, CSCuw77959.

References

http://www.securityfocus.com/bid/101034

http://www.securitytracker.com/id/1039445

https://quickview.cloudapps.cisco.com/quickview/bug/CSCsm45390

https://quickview.cloudapps.cisco.com/quickview/bug/CSCuw77959

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-dhcp

Details

Source: MITRE

Published: 2017-09-29

Updated: 2019-10-09

Type: CWE-119

Risk Information

CVSS v2

Base Score: 10

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL